fix: cloud-init script for hetzner

app/util/hetzner.py

@@ -22,19 +22,20 @@ def multiline_to_singleline(input_text: str) -> str:
     Returns:
         str: Single-line string with `\\n` replacing newlines.
     """
-    return input_text.replace("\n", "\\n")
+    return input_text.replace("\n", "\n")
 
 
 def create_instances(request):
     captain_domain = request.captain_domain.strip()
     credentials_for_chisel = util.chisel.generate_credentials()
 
     # Define user data
-    user_data_readable = f"""#cloud-config
+    user_data_readable = f"""
+#cloud-config
 package_update: true
 runcmd:
-- curl -fsSL https://get.docker.com -o get-docker.sh && sudo sh get-docker.sh && sudo apt install tmux -y
-- sudo docker run -d --restart always -p 9090:9090 -p 443:443 -p 80:80 -it jpillora/chisel:v1.10.1 server --reverse --port=9090 --auth='{credentials_for_chisel}'
+    - curl -fsSL https://get.docker.com -o get-docker.sh && sudo sh get-docker.sh && sudo apt install tmux -y
+    - sudo docker run -d --restart always -p 9090:9090 -p 443:443 -p 80:80 -it docker.io/jpillora/chisel:1.10.1 server --reverse --port=9090 --auth='{credentials_for_chisel}'
 """
 
     user_data = multiline_to_singleline(user_data_readable)